CVE-2026-64880: SQL Injection Vulnerability in Filtering

CVE-2026-64880 Overview

CVE-2026-64880 is a blind SQL injection vulnerability affecting report filtering functionality. User-supplied input in report filter parameters is concatenated directly into SQL statements without proper escaping or parameterization. An authenticated attacker with low privileges can inject arbitrary SQL syntax through these parameters. Successful exploitation enables unauthorized read access to database contents, including data outside the attacker's intended scope.

The issue is classified under [CWE-89] Improper Neutralization of Special Elements used in an SQL Command. Tenable published advisory TNS-2026-19 describing the flaw.

Critical Impact
Authenticated attackers can extract arbitrary database contents through blind SQL injection in report filter parameters, exposing confidential records without triggering authorization checks.

Affected Products

See Tenable Security Advisory TNS-2026-19 for the affected product and version list
Specific affected product identifiers were not published in the NVD record at time of writing
Deployments exposing report generation features to authenticated users

Discovery Timeline

2026-07-21 - CVE-2026-64880 published to the National Vulnerability Database (NVD)
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-64880

Vulnerability Analysis

The vulnerability resides in the server-side handler that builds SQL queries for report filtering. Filter values arriving from the client are concatenated into the query string using string operations rather than prepared statements. Because the values are never validated, quoted, or bound as parameters, SQL metacharacters retain their syntactic meaning.

Exploitation is described as blind, meaning the application does not return raw query results or verbose database errors. Attackers instead infer data by observing conditional response differences or timing behavior. A low-privilege authenticated session is sufficient to reach the vulnerable endpoint, according to the CVSS 4.0 vector requiring PR:L and no user interaction.

Successful injection yields confidentiality impact against the database. Integrity and availability impacts are limited because the affected code path is a SELECT context used for reporting rather than an update or administrative operation.

Root Cause

The root cause is dynamic SQL construction using unsanitized input. The application concatenates report filter parameters into query strings without using parameterized queries, bind variables, or an ORM safe API. Input allow-listing and type coercion are also absent, so operators such as UNION, AND, sub-selects, and boolean predicates pass through unchanged.

Attack Vector

An authenticated attacker sends crafted values through report filter parameters over the network. Injected boolean or time-based payloads modify the query's WHERE clause. The attacker iterates payloads to enumerate schemas, tables, and cell values one bit at a time. No user interaction is required beyond the attacker's own session.

Refer to the Tenable Security Advisory TNS-2026-19 for vendor-published technical details.

Detection Methods for CVE-2026-64880

Indicators of Compromise

Report requests containing SQL metacharacters such as ', --, /*, ;, UNION, SLEEP(, or BENCHMARK( inside filter parameters
Repeated report queries from a single authenticated session with incrementing conditional payloads characteristic of blind extraction
Anomalous response latency patterns on report endpoints consistent with time-based SQL injection
Database logs showing malformed or unusually long queries originating from the reporting service account

Detection Strategies

Enable database query logging and alert on queries containing tautologies, stacked conditions, or sleep/benchmark functions from the reporting subsystem
Deploy a web application firewall with SQL injection signatures tuned to the report endpoint URIs and parameter names
Correlate authenticated user sessions with abnormal query volume or diverse table access patterns not typical of standard reporting workflows

Monitoring Recommendations

Baseline normal report query shapes and alert on deviations in parameter length, entropy, or character composition
Monitor for large outbound responses following report requests, which may indicate UNION-based extraction
Track failed and successful authentication events preceding report activity to identify credential-abuse chains leading to injection attempts

How to Mitigate CVE-2026-64880

Immediate Actions Required

Apply the vendor-supplied update referenced in Tenable Security Advisory TNS-2026-19 once available for your deployment
Restrict access to report generation features to the minimum set of authenticated users required for business operations
Review database and application logs for the indicators listed above going back to the earliest possible retention window

Patch Information

Consult the Tenable Security Advisory TNS-2026-19 for the fixed version and upgrade instructions. The NVD record does not list specific patched build numbers at time of publication.

Workarounds

Place the report endpoints behind a web application firewall with SQL injection rules enabled in blocking mode
Enforce least-privilege database credentials for the reporting service so injected queries cannot read tables outside the reporting scope
Temporarily disable or gate the report filtering feature for lower-trust user roles until the patch is applied

bash

# Example WAF rule concept for blocking SQL metacharacters in report filter parameters
# (adapt to your WAF syntax and test in detection mode before enforcing)
SecRule ARGS_NAMES "@rx ^(filter|report_filter|where)" \
  "chain,id:1026064880,phase:2,deny,log,msg:'CVE-2026-64880 SQLi attempt'"
  SecRule ARGS "@rx (?i)(union\s+select|sleep\s*\(|benchmark\s*\(|--|/\*|;)" "t:none"